Picking motion for looms



June 3, 1930. A. A. GORDON ET AL I PICKING MOTION FOR LOOMS Filed Aug. 3, 1928 5 Sheets-Sheet 1 [rm/rim 17/56? H Gomn a; [fl/mg lk/ June 3, 1930. D N ET AL 1,760,981

PICKING MOTION FOR LOOMS Filed Aug. 5, 1928 s Sheets-Shet '2 Hliilllli iillllllllllllllllllllllllllllllll[lllllll ffy/77 fivcfr i June 3, 19 0- A. A. GORDON ET AL 1,760,981

PICKING MOTION FOR LOOMS Filed Aug. 3, 192 8 5 Sheets-Sheet s new ALBERT a. sermon Am) IRVING E. VERBY, on woncns'rnn, massnorznsnr rs, ,As-

n star igeaei SIGNQRS TO CEQMPTOIYI & YNONLES 1100M WORKS. OFYWGRCESTER, MASSAOI'ZU SETTS, A CORPORATION OF Y/IASSACHUSETTS I i 1 PICKING orton non LOOMS Application filed. An us: 3,1928- Serial No. eaters This invention relates to improvements in picking motions, for looms and it is the general object of the invention to provide a,

motion wherein the power which operates the picker sticks at each end of the loom may be derived from the main source of power of the.

loom in such a way as to relieve the pattern mechanism of undue sudden strains.

In the so-called Knowles loom an example of which is shown inpatent to Knowles No. 134,992 driving mechanism for the 100m is located at one side and the head or pattern and box controlling mechanism is located at the other side of the loom. The head is ordi-' narily operated by an upright shaft which may be connected to the bottom shaft of the loom. T he bottom shaft will "ordinarily have 1 loom to interfere with the smooth'and uni-' form operation of the upright shaft which drives the head.

The upright and bottom shafts are geared together but when the picking arm on that side of the loom opposite the source of power engages the picking cam there will be a relative backward twistof the bottom shaft which will continue until the picking arm and its picking ball pass over the high part of the picking cam, after which, the strain of the pick being relieved, the shaft-will have a quick forward motion in addition to its regular rotary motion. "Th s quick motionis transmitted to the upright shaft and from the latter to the operating parts of the head, and

it is an important object of our present- 111- vent-icn to eliminate the twist of the shaft by deriving power which operates both picking mechanisms from that side of the loom near the source of power, thus eliminating he twist in the bottom shaft and permitting the latter to operate the upright shaft in the head without abnormal strains.

is a further object of our present invention to employ pair of oppositely extending picker arms on the bottom shaft which cooperate with a two part picking shoe oscil- P latable first in one direction and then in the other direction underinfluence of the picker arms.

It is another object of our invention to make the picking shoes or cams relatively movable with one shoe fixed to-the picking shaft, said 'fixedshoe being set to cooperate" with its corresponding picking ball and the movable shoe being adjusted so that the latter will cooperate with the other picking arm in the proper manner.

tion to provide a power arm which is oscillated nrst in one directlon and then in the other and to connect, sa d .power arm with the two picker sticks by means of linkage providing lost motion so that when one picker stick is being actuated theother may remain at rest.

y We find that in wide looms the link .which extends from the'picking motion to the opposite side of the loom is subject to, some vibra- It is a further ob'ect of ourpresent invention and it is a further object of our present invention to provide means for arresting the vibration in the link and in further provid-' ing for lost motion in such a way as will permit oscillation.ofth'eaforesaid power arm about an axis without straining the link as the latter is held in substantial-ly the' same longitudinal position by the means which prevents its vibration.

With these and other objects in view which will appear as the description proceeds, our.

invention resides'in the combination and arrangement of 'parts hereinafter described and 'set forth in the claims.

"In the accompanying drawings whereina convenient embodiment ofour invention is set forth,

Fig. 1 is a front elevation of a loom made picker sticl: 16 which is Fig. 4 is a section taken on line 4-4 of Fig. 3,

Fig. 5 is an end elevation looking in the direction of arrow 5, Fig. 4,

Fig. 6 shows the two-part picking arm, looking in the direction of arrow 6, Fig. 2, which cooperates with the shoe shown in Figs. 3, 4- and 5, and

Fig. 7 is a detailed vertical section on line 7- of Fig. 6.

Referring to Figs. 1 and 2 we have shown a loom frame 10 and a lay 11 which is moved and forth away from and toward the breast beam 12 by mechanism well understood. As shown herein we locate a single box 13 on one end of the lay and a plurality of boxes 14 at the other end of the lay, said boxes 14 being actuated in a vertical direction by box lifter rod 15.

The plain box 13 has associated therewith pivoted at 1T the rocker iron 18 of the lay while the ifting boxes 14 have associated therewith a second picker stic 19 which moves about it stud 20 carried by the rock iron 21.

The head motion designated herein generally at K is provided with upper and lower mutilated driving cylinders 22 23, respectively, which are driven by bevel gears 24 and respectively, secured to the u end of an upright shaft 26. The lower or of said shaft 26 may be provided with beve gear meshing with a second bevel gear secured to a short shaft 29 extending through a bearing 30 carried by the loomside.

The inner end of the short shaft 29 has secured thereto either an eccentric or an ellipbearings 34 and 35 which are located, re-

spectively, at the head and driving ends of the loom. The main driving 36 is located adjacent the bearing 35 and is secured to the bottom shaft 33. The 6 may driven in any approved manner by mechanism not shown and will ordinarily be a constant rotation in the direction indi..(.ted by the arrow, Fig. 2.

In this way the upright shaft 26 is given a complete rotation for, every half turn of the bottom shaft 33 or for each picl: of the loom.

By means of connectionsnot shown herein the head motion K determines the vertical movement of the boxes 14 and also acts to lift the warp threads not shown. The mechanism thus far described is of common construction and forms part of our prose. invention.

Our present improvements relate part larly to the manner of communicating power 16 and 19, and in carrying our invention into not shown but give the picker shaft 40 an opposite rota 0 or a clockwise rotation as viewed in effect we provide a so-called picking shaft 40 which may be of substantially rectangular cross section as indicated in 4 and may be mounted for oscillation in front and rear bearings 42 and 41, respectively, which are fixed to the loom frame.

Secured in proper adjusted position along the lengthof the shafti4O is an oscillating picking shoe support 43 which has one cam 44 fixed thereto, preferably by being cast integral therewith. Extending on .ardly from the shoe support 43 is a pair of spaced ears 45 through and between which extends a stud 46. The latter affords pivotal support for the second cam element 47 which has a hub 43 located between the ears45 pivotally'niounted on the stud 46.

As shown in Fig. 4 the shoe support 43 provided with an arm 49 in which issecured an upwardly extending adjustable stop screw 50 held in adjusted position by check nut 51. Said screw engages a face 52 on the under side of the movable cam:member and acts to position the latter relatively to the shoe support 43.

A hub shown particularly in Fig. 6 has pair of operatively extendlng picking 61 and 62 on which are rotatably mounted the pic'king balls 63 and 64, respectively. The picking ball 63 as shown herein may cooper 47. The hub is secured to the bottom shaft 33 in adjusted position and also in correct longitudinal position along said shaft bya set screw 65. r 1

In the operation of the meclaism thus far described thepicliing eras 61 ant will rotate with the bottom shaft the cam 44 to rock the shaft 40 in. a coun clockwise direction as viewed in Fig. 1, while on the next pick when the bottom shaft made a hal revolution the picking ball will engage the movable cam element 47 o In this way as the bottom shaftconti rotate the shaft 4-0 will be oscillated to first in one direction and then in the The screw 50 affords means for a the cam faces relatively to their picking balls. The picking; arm 60 is located close to the driving gear 36 and as a result. there is very little twist in that portion of the shaft which lies between the picking arm and the driving gear.

The device by which motion 01"" the picker shaft 40 is communicated to the picker stic; includes an upright power arm 'ZO having two spaced studs 71 and 72which are operative! connected, respectively, to the picker stic 16 and 19. A. sweep stick 73 has a slot 74 through which the stud 71 extends, said stud 81 atthe opposite side of the loom.

sweep stick being connected by a lug strap 75 to the picker stick 16. a I

. The other stud 72extends through a slot 7 6 in a rod head 7 7,1nounted on the right hand end of rod 78 as shown in Fig. 1 Said rod is connected at the left hand end thereof to a stud 7 9 which extendsthrough the upper part of an arm 80 pivotally "mcuntedon a fixed A speed stick 82 is connected to the-stud71 and by means of lug strap 83 is connected to the picker stick 19, The arm 8O serves to support the inner end of the sweep stick 82 and also the left hand end ofthe rod 78 as viewed in Fig. 1.

We find during the operation of the mechanism that a certainamount of vibration,

occurs in the rod7 8 and in order to prevent this we provide a tube or pipe 8 1- through which the'rod 78 extends, said tube being supported by fixed brackets 8-5. In'order that the arm 70 may oscillate freely in a counterclockwise direction as v ewed 111 Fig. 1 without stralning the rod 7 8 we make the slot 76 in the rod head 77 arcuate, preferably about the center of the picking shaft as a center. v

In operation, power is communicated as previously described from the driving gear 36 to'the hub to cause-oscillation ofthe shoe support 43 first in, one direction and then in the other. As the arm moves to the left picker stick 16 will be given an actu- 'ating motion and stud 72 will move idly along the arcuate slot 76. On the next pick of the loom when the arm 70 moves to the right the stud 72acting through the rod head 7 7 and intervening mechanism will give the picker stick 19 anaetuatin stroke,"the stud 17'under these conditions movingidle in slot 7 1. In view of the shortness of the sweep stick 73 and the fact that the'same is loosely connected to the picker st-ick'in the usual manner, the downward motion of the stud-71 as the arm" 70 moves to the right will be accompanied by a corresponding downward motion on the part of the sweep stick 73. It will therefore be seen that the operation of both picker sticks is brought about by mechanism which is located close to-the source of power.

As the bottom shaft 33 continues to rotate it will impart motion to the uprightshaft 26. This motion, while it is continuous will not e necessarily be uniform, inasmuch as'the pin ionand gear 31 and 32, respectively, are not concentricwith their respective axes but-are either eccentric or elliptical. It will be ap parent from an inspectia-ion of Fig. 2 that the bottom shaft will not be acted upon by any force near the head end of the loom tending to create atwist or strain in said shaft and for this reason-the motion which is t-ransmittedthrough the'upright shaft 26 will be smooth and free from the objectionable vibration andsudden strain which would exist if a picking arm werelocated on the bottom shaft at the head end of the loom. The arm 70 and therefore the shaft 40 will be held in normal position by the engagement of the stud 71 and 7 2 withthe sweep stick 73 and rod head 7 7, respectively. It is to be understood that each picker stick tends normally to move toward the adjacent outer end of the lay, 'as is usual'in loom construction, th1s result be ng accomplished through mechanlsm -not;shown but connected to the straps S shown in Fig. .1.

From the foregoing it will be seen that we have provided a picking motion the driv ing part of which is located close to the source of power, with the result that there is practically no twist or strain imposed upon the .bottom shaft other than that caused by the upright shaft 26 and the parts connected therewith. It will also be seen that the picking balls are offset with respect to each other and move in different planes perpendicular tothe bottom shaft and that the picking shaft 41-0 hes in a vertical plane which is substanpicking shaft will be oscillated first in one direction and then in the other. By a slight longitudinal adjustment ofthe hub 60 along the bottom shaft we may vary the relation of the picks if it should be found that the the other side of the loom. Furthermore, it

will be seen that the shoe 47 is movable relatively to the fixed cam 44 and in this way we are enabled to adjust both picking shoes,

- tially intermediate the'planes ofthe picking balls, so that as the bottom shaft rotates the picking on one side is stronger than that'on I relatively to their respective picking balls.

Itwill also b'elnoted that, the rod 78 passes through a guide whichacts to restrain undue vibration of said rod. Furthermore, the ar cuate' slot 7 6 permits the arm 70 to moveto 1. In a loom, a loom driving element at one end ofthe loom, a harness controlling ele- 'me nt at the other end of the loom, a shaft extending across the loom and operatively connecting the elements, a shuttle driving member adjacent each end of the loom, a pair ofo ositel extendin ickin arms secured to the shaft at that end of'the latter adjacent the driving element, and means operated by one of said arms to actuate the memher at one end of the loom and actuated by s the other arm to operate other end of the 100m. v 2. In a loom, a loom driving element at one the member at the I in 'end of the loom, a harness controlling eleinont at the other end of the loom, a shaft extending across the loom and ope atively connecting the elements, a shuttle props lng member at each end of the loom, an actuating device for bothpropelling members connected to the saaft at one part only thereof adjacent the driving element, connectors for each picker stic" to be operatively related to the actuating device the connector entending toward the member adjacent the harness controlling element being relatively long, and means to restrain vibration of said long connector..

3. In a loom, a loom driving element at one end'of the loom. a harness controlling element at the other end of the loom, a shaft extending across the loom and operativelv connecting the elements, a shuttle propelling member at each end of the loom, an actuating; device for both propelling members connected to the shaft at one part only thereof adjacent the driving element, connectors for each picker stick to be operatively related to the actuating mechanism, the connector extending towardthe member adjacent the harness controlling element bein relatively long, and

means to restrain vibration of said long con nector, said means engaging the connector at a point intermediate its length.

. 4(In a loom, a loom driving element at one end of the loom, a harness cont-rolling element at the other end of the loom, a shaft extending across the loom and operatively connecting the elements, a shuttle propelling member at each end of the loom, an actuating device for both members connected to the shaft at one part only thereof adjacent the driving element, connectors for each picker stick to be operativelv related to the actuating mechanism, the connector extending toward the member adjacent the harness controlling element being relatively long, and means to restrain vibration of said long connector, said means includin a tubular device through which the connector freely extends. V

In a loom, a loom driving element atone end of the loom, a'harn ess controlling element t the other end of he loom, a shaft extending across the loom and operatively connecting the elements, a shuttle propelling member for each end of the loom, actuating mechanism goth propelling members connected to the 1ft adj acent the drivin element, conctorsoperatively connecting each shuttle 'opelling member with the mechanism, and

' a-lost motion connection between each con nector and the actna. mechanism.

6. In a loom, a loom driving element at one end of the loom, a harness cont-rolling element at the other end of the loom, a sh ft contending across the loom and operativ necting the elements, a shuttle pr member for each end of the loom, ac mechanism for both propelling members so cured to and deriving motion from the shaft at a point adjacent the driving element, an oscillating power transmitting device forming a part of the mechanism, a connector for each member operatively connected to the device, and means'defining a lost motion connection between each connector and the device, said lost motion connectings being so arranged that the device will transmit power to but one of the members when said device moves in one direction.

7. In a loom, a loom driving element at one end of the loom, a harness controlling element at the other end of the loom, a driving shaft extending across the loom and operatively connecting the elment, a shuttle propelling member for-each end of the loom, a picking shaft oscillatable first in one direction and then in the other, means to connect the picking shaft to both shuttle propelling members so that when said picking shaft oscillates in one direction one member is actuated and when the. picking shaft oscillat' in the other direction the other shuttle propelling member is actuated, and mechanism carried by the driving shaft adjacent the driving element for oscillating the pickingshaft.

8. In a loom, a loom driving element at one end of theloom, a harness controlling element at the other end of the loom, a shaft'extending across toe loom and operatively connecting the elements, a shuttle propelling member for each end of the loom, a picking shaft operatively connected to the shuttle propolling members, means carried by the first named shaft adjacent the driving element to oscillate the picking shaft first in one direction and then in the other, and a lost motion connection between the picking shaft and each member so that one of said members will be operatively related to the picking shaft and the other will be idle relatively to the picking shaft when the latter oscillates in ither direction.

9. In a loom, a rotating element, a pair of actuating members carried by said element and located in difierent planes parallel to the axis of the element, a picking shaft to be operatively related to one of said members on one pick of the loom and to the other member on the next pick of the loom to give said picking shaft a motion in two directions, and a Shuttle propelling device at each end of the loom operatively connected to the picking shaft on alternate picks the loom so that when one of the members actuates the picking shaft one of the shuttle propelling devices will be operative, and when the other member actuates the pickirw sh t to give the latter a motion in another direction so that the other shuttle propelling; device will be operative.

10. In a loom, a single picking shaft, a shuttle propelling member ateach end of the loom, means to oscillate said picking shaft an, max;

loom operatively connected to the picking so that the latter moves in one direction on one pick of the loom and in the opposite direction on the next pick of the loom, and connections between said picking shaft and the members to render the latter alternately operative as the'picking shaft moves first in one direction and then in the other.

' 11. In a loom, a rotating shaft, a; pair of oppositely extending arms secured to the shaft and offset from each other with respect to the axis of the shaft, a picking shaft, shuttle propelling members one for each end of the shaft, and means'secured to said shaft to be engaged by the arms as the first named shaft rotates to oscillate the picking shaft first in one directon and then in the other.

12. 1 11 a loom, a rotating shaft, a pair of oppositely extending arms secured to the shaft and offset from each otherwith respect to the axis of the shaft, a picking shaft, shuttle propelling members one for each end of the loom operatively connected to the picking shaft, and meanssecured to said shaft to be 1; engaged by the arms as the first named shaft a lying on one side and the other shoe lying on the other side of the axis of the picking shafts, one shoe being in the path ofmovement of-one of the arms and, the other shoe being inthe path of movement of the other arm so that as the first named shaft rotates the picking shaft will be rocked first in one direction and then in the other direction, and shuttle propelling means located'at each end ofthe loom operatively COIIIIGCtGdflZOlZllB V picking shaft, the shoes being relatively movable wth respect to each other.

V 14. In aloom, a rotating shaft, a pair of oppositely extending picking arms ofiset from each other with respect to the axis of the shaft, a pickingshaft extending trans- I versely of the first named shaft, a pair of shoes secured to said picking: shaft, one shoe 7 lyingone side and the other shoe lyingon the; other side of the axis of the picking; shafts, one shoe being in the path ofmovementof the other arm so that. as the first named shaft rotates the picking shaft will be rocked first in one direction and then in the other direc- 15. In a loom, a rotating shaft, oppositely extending picking arms secured to the shaft,

said arms being offset from each other with respect to the axis of the shaft, a picking shaft extending substantially perpendicular to the first named shaft and having the axis thereof intermediate the picking arms with respect to a plane perpendicular to the axis of the first named shaft, a picking shoe for veach side'of the picking shaft and the corresponding arms, one of said arms engaging its 5 corresponding shoe when the first. named shaft is in one angular position and'the other picking arm engaging the other shoe when the first named shaft is in another position to oscillate saidpicking shaft.

16. A picking shoe for loom picking mechanism having a body through which extends an opening to receive apicking shaft, and a pair of picking cams, one cam located on each side of the axis of the opening through the body, each cam forming part of the shoe and arranged tobe engaged by an operating part of the loom. 4 a

17 In a loom, a driving element oscillatable' about an axis, a shuttle propellingmemberfateach end of the loom, a connector for each member to be oper'atively related to the device, a guide for one of said connectors through which the latter connector moves 'with a substantially longitudinal motion,

and means defining .a lost motion connection between said device and the rod 7 extending through the guide, said lost mo-v tion means including a rod head having a slot 'which is substantially concentric with the axis of the device. 4 18. A picking shoe'for loom picking mech anism having a body through which extends an opening to receive a picking shaft, and a pair ofvpicking cams to be engaged by the operating part of the loom, a cam located on each side of the axisof the opening through the-body, one of said cams being movable with respect to the body to assume a plurality of positions with respect to the latter, said cams forming part of the shoe.

In testimony whereof we have hereunto affixed our signatures.

ALBERT A, GORDON. IRVING nvER Y.

' tion, and shuttle propellingmeans located at r each end of the 100111 operatively connected to the picking shaft one of said shoes being relatively movable with-respect to the picking shaft. 1 

